Drug targets a biomolecule that can directly bind to drugs and then react. Generally, the target refers to a protein, which is related to the cause of disease. The focus of the target began with focusing on tumors and then began to spread to various fields. Introduction to CD160 protein is a common target in medicine.

CD160, or BY55, a glycosylphosphatidylinositol (GPI) -anchored membrane protein molecule, is a member of the immunoglobulin superfamily. Its protein has a molecular weight of about 27 kDa, and it is a glycoprotein. It initially appears on the surface of NK cells and is expressed in the GPI form or transmembrane form. Meanwhile, it is also expressed on the surface of some cells with cytotoxic activity, such as CD8 + T cells in the small intestinal epithelium. Some B cells in CLL can express CD160, which enhances cell survival and activation, leading to IL-6 production. Scientists believe that CD160 acts as a co-stimulatory or co-inhibitory function by interacting with different ligands.